Comment on “Investigation of the structural, surface topographical, fractal, capacitive, and electrical properties of a defect brownmillerite perovskite material KBiFeMnO5 for electronic devices” by D. Panda, S. S. Hota and R. N. P. Choudhary, RSC Adv., 2024, 14, 3400

Abstract

The comments present the erroneous processing of diffraction data. The ‘novel’ complex material KBiFeMnO₅ described in the commented paper does not exists at all. The studied sample was mainly the sillenite Bi₂₅FeO₄₀ or/and Bi₂₄Mn₂O₄₀ instead of brownmillerite KBiFeMnO₅. Thus, the data from subsequent experiments are without scientific value.